Marine Interpretation Message
Issued by NWS

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000
AGPN40 KWNM 122102
MIMPAC

MARINE WEATHER DISCUSSION FOR N PACIFIC OCEAN
NWS OCEAN PREDICTION CENTER WASHINGTON DC
202 PM PDT SAT JUL 12 2014

.FORECAST DISCUSSION: MAJOR FEATURES/WINDS/SEAS/SIGNIFICANT
.WEATHER FOR THE NORTH PACIFIC N OF 30N AND E OF 150W.

THE PATTERN ACROSS THE EPAC REMAINS VERY QUIET TODAY WITH SOME
GRADUAL TIGHTENING OF THE GRADIENT ALONG THE CALIFORNIA COAST
AFTER 48 HRS...FIRST BEGINNING ALONG THE SRN CA CST...THEN
EXPENDING N ALONG THE CST...EVENTUALLY PRODUCING GALES IN THE
COASTAL ZONES ALONG THE NRN CA AND FAR SW OR COAST LATE MONDAY
INTO MONDAY NIGHT. LATE IN THE FCST PERIOD THE OTHER AREA OF
CONCERN WILL OCCUR ALONG THE NE PTN OF THE WA WATERS AS THE
GRADIENT TIGHTENS TO NEAR GALE FORCE. THE 12Z GFS RUN IS VERY
SIMILAR TO PRIOR RUNS AND THEREFOR DONT EXPECT MUCH CHANGE IN THE
GRIDS AND ASSOCIATED TEXT FCST AT ISSUANCE. THE 30M GFS INDICATES
THAT GALES ARE POSSIBLE ALONG THE NRN CA CST LATE MON...ALTHOUGH
WILL KEEP CONTINUITY AND POP GRIDS USING 10M WINDS...ALTHOUGH THIS
AREA BEARS WATCHING INCASE THE TREND OF THE MODELS ARE TO INCREASE
THE GRADIENT THERE. IN GENERAL THE SEAS AT 18Z ACROSS THE ENTIRE
OFFSHORE WATERS ARE 3-6 FT AS INDICATED BY SFC OBS. THE GLOBAL
MODELS ARE ALL IN PRETTY GOOD AGREEMENT FOR THE MOST PART WITH THE
OVERALL PATTERN...JUST DIFFERING IN THE STRENGTH OF THE BL WINDS.
THE ECMWF IS SLIGHTLY WEAKER WITHE THE GRADIENT ALONG THE NRN CA
CST THAN THE GFS IS...AND THATS ANOTHER REASON I PLAN ON KEEPING
WINDS SUB GALE FOR THE NEXT PACKAGE.

SEAS...ONLY VERY SMALL CHANGES EXPECTED IN THE GRIDS AS THE LATEST
WW3 IS VERY CONSISTANT WITH PRIOR RUN AND NOT MUCH DIFFERENT THAN
ECMWF WAVE GUID. WILL CONTINUE TO POP GRIDS WITH WW3 WITH MINOR
ADJUSTMENTS ALONG NRN CA CST MON NIGHT INTO TUE.

.EXTRATROPICAL STORM SURGE GUIDANCE...N/A

.WARNINGS...PRELIMINARY.

.PZ5 WASHINGTON/OREGON WATERS...
     NONE.

.PZ6 CALIFORNIA WATERS...
     NONE.

$$

.FORECASTER SHAW. OCEAN PREDICTION CENTER.



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